<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS图片模糊</title>

    <style>
        img {
            display: block;
            width: 50%;
            height: 50%;
            margin: 100px auto;
            filter: blur(3px);
        }
        
        img:hover {
            filter: blur(0px);
        }
    </style>

</head>

<body>

    <img src="img/7bf51d9fa40156eccb6c7cec218996368dc72872.jpg">



</body>

</html>